Design and Fabrication of a Ring-Core Photonic Crystal Fiber for Low-Crosstalk Propagation of OAM Modes

Tandjè, Arsène; Yammine, Jean; Bouwmans, Géraud; Dossou, Michel; Vianou, Antoine; Andresen, Esben Ravn; Bigot, Laurent

doi:10.1109/ecoc.2018.8535461

Cited by 7 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solid annular-core fibers have shown interesting results [16,18,19] but have limitations in terms of achievable intermodal separations, chromatic dispersion and mode selection. Microstructured fibers and photonic crystal fibers (PCF) in particular have recently attracted significant research interest towards alleviating the above limitations of solid-core fibers by exploiting the significantly increased design freedom afforded by the holey structure and the unique modal properties that emerge [21][22][23][24][25][26]. A particular design of annular-core photonic crystal fiber (AC-PCF) recently proposed the theoretical ability to enforce mono-radial vector-vortex mode guiding while preventing higher-radial order modes over a very large bandwidth [27].…”

Section: Mode Structure and Attenuation In Ac-pcfmentioning

confidence: 99%

Transmission of Orbital Angular Momentum and Cylindrical Vector Beams in a Large-Bandwidth Annular Core Photonic Crystal Fiber

Sharma

Amirkhan

Mishra

et al. 2020

Fibers

View full text Add to dashboard Cite

The stable propagation of orbital angular momentum and cylindrical vector beams in a newly designed annular core photonic crystal fiber (AC-PCF) tailored for the broadband single-radial order beam transmission (within the so-called “endlessly mono-radial” guiding regime) is demonstrated for the first time. It is shown that the vector-vortex beams can maintain high mode purities above 18 dB after propagation in the fiber under test over all of the wavelength range from 805 to 845 nm (over 17 THz bandwidth) investigated with the help of a tunable laser and an S-plate for the generation of singular beams in free space. Our results confirm that the AC-PCF is a promising design for the broadband transmission of vector-vortex beams that have potential applications in space-division multiplexing, quantum communications, optical sensing and trapping.

show abstract

Section: Mode Structure and Attenuation In Ac-pcfmentioning

confidence: 99%

Transmission of Orbital Angular Momentum and Cylindrical Vector Beams in a Large-Bandwidth Annular Core Photonic Crystal Fiber

Sharma

Amirkhan

Mishra

et al. 2020

Fibers

View full text Add to dashboard Cite

show abstract

“…Therefore, it is necessary to generate fiber structure with a large effective mode field area as far as possible, so as to improve the quality of mode transmission. The area of the effective mode field can be obtained by the following formula [33]:…”

Section: Crystal 2019 6 X For Peer Reviewmentioning

confidence: 99%

Analysis of the Transmission Characteristic and Stress-Induced Birefringence of Hollow-Core Circular Photonic Crystal Fiber

Yang

Zhang

et al. 2019

Crystals

View full text Add to dashboard Cite

Orbital angular momentum modes in optical fibers have polarization mode dispersion. The relationship between polarization mode dispersion and the birefringence vector can be deduced using an optical fiber dynamic equation. First, a mathematical model was established to formulate mode dispersion caused by stress-induced birefringence. Second, in the stress-induced birefringence simulation model, the finite element method was used to analyze the transmission characteristics of the hollow-core circular photonic crystal fiber. Finally, mode dispersion caused by stress-induced birefringence was obtained using theoretical derivation and simulation analyses. The results showed that the new fiber type has good transmission characteristics and strong stress sensitivity, which provide key theoretical support for optimizing the structural parameters of optical fiber and designing stress sensors.

show abstract

“…At present, the fabrication of PCF and the doping process of the ion have been matured. A fiber similar to the C-PCF structure has been drawn and experimented on [36][37][38]. Therefore, it is feasible to manufacture the OAM-EDFA based on C-PCF.…”

Section: Analysis and Optimizationmentioning

confidence: 99%

Two-Layer Erbium-Doped Air-Core Circular Photonic Crystal Fiber Amplifier for Orbital Angular Momentum Mode Division Multiplexing System

Zhang

Han

et al. 2019

Crystals

View full text Add to dashboard Cite

Orbital angular momentum (OAM) mode-division multiplexing (MDM) has recently been under intense investigations as a new way to increase the capacity of fiber communication. In this paper, a two-layer Erbium-doped fiber amplifier (EDFA) for an OAM multiplexing system is proposed. The amplifier is based on the circular photonic crystal fiber (C-PCF), which can maintain a stable transmission for 14 OAM modes by a large index difference between the fiber core and the cladding. Further, the two-layer doped region can balance the amplification performance of different modes. The relationship between the performance and the parameters of the amplifier is analyzed numerically to optimize the amplifier design. The optimized amplifier can amplify 18 modes (14 OAM modes) simultaneously over the C-band with a differential mode gain (DMG) lower than 0.1 dB while keeping the modal gain over 23 dB and noise figure below 4 dB. Finally, the fabrication tolerance and feasibility are discussed. The result shows a relatively large fabrication tolerance in the OAM EDFA parameters.Crystals 2019, 9, 156 2 of 10 capacity in a MDM system [5]. For communications using OAM beams, there are two key problems to be solved. One is the optical vortex generation, which is the most fundamental technique to implement OAM multiplexing. The optical vortex can be generated by a variety of schemes, such as spatial light modulator [6] and modified interference of different modes [7]. A liquid-crystal spatial light modulator is another promising scheme for generating OAM modes, which exhibits some good properties including simplicity, high efficiency, and reconfiguration [8][9][10]. Another is the optical vortex beam transmission, which needs the fiber supporting OAM modes. In current research, the ring fiber was designed mostly to transmit OAM modes [11][12][13][14][15]. The circular photonic crystal fiber (C-PCF) was also proposed as a potential OAM fiber structure [16][17][18][19]. One fiber can transmit several dozens of mutually orthogonal modes. To date, terabit data transmission based on an OAM fiber has been demonstrated [20]. The transmission distance of the OAM mode in fibers has already reached 50 km [21]. However, many techniques are still needed for handling the implementation of long-haul MDM systems based on OAM modes. OAM carrier signal amplification is one of the critical techniques.The Erbium-doped fiber amplifier (EDFA) not only allows the light signal to be amplified online directly but also possesses the same range between amplification wavelength and the low loss wavelength of optical fibers, which is suitable for MDM systems based on OAM modes. However, unlike the single-mode fiber amplifier, there are tens (even dozens) of modes in the OAM fiber amplifier. The transverse distribution of each mode is different. The biggest difference of these mode gains was defined as differential mode gain (DMG) [22]. DMG should be low enough to ensure approximately equal amplification of the multimode in the fiber.In recent studies, most designs...

show abstract

Design and Fabrication of a Ring-Core Photonic Crystal Fiber for Low-Crosstalk Propagation of OAM Modes

Cited by 7 publications

References 4 publications

Transmission of Orbital Angular Momentum and Cylindrical Vector Beams in a Large-Bandwidth Annular Core Photonic Crystal Fiber

Transmission of Orbital Angular Momentum and Cylindrical Vector Beams in a Large-Bandwidth Annular Core Photonic Crystal Fiber

Analysis of the Transmission Characteristic and Stress-Induced Birefringence of Hollow-Core Circular Photonic Crystal Fiber

Two-Layer Erbium-Doped Air-Core Circular Photonic Crystal Fiber Amplifier for Orbital Angular Momentum Mode Division Multiplexing System

Contact Info

Product

Resources

About